WHO

Section: User Commands (1)
Updated: March 2021
Page Index

NAME

who - show who is logged on

SYNOPSIS

who [,OPTION/]... [ ,FILE | ARG1 ARG2 /]

DESCRIPTION

Print information about users who are currently logged in.

-a, --all: same as -b -d --login -p -r -t -T -u
-b, --boot: time of last system boot
-d, --dead: print dead processes
-H, --heading: print line of column headings
-l, --login: print system login processes
--lookup: attempt to canonicalize hostnames via DNS
-m: only hostname and user associated with stdin
-p, --process: print active processes spawned by init
-q, --count: all login names and number of users logged on
-r, --runlevel: print current runlevel
-s, --short: print only name, line, and time (default)
-t, --time: print last system clock change
-T, -w, --mesg: add user's message status as +, - or ?
-u, --users: list users logged in
--message: same as -T
--writable: same as -T
--help: display this help and exit
--version: output version information and exit

If FILE is not specified, use ,/var/run/utmp/. ,/var/log/wtmp/ as FILE is common. If ARG1 ARG2 given, -m presumed: 'am i' or 'mom likes' are usual.

AUTHOR

Written by Joseph Arceneaux, David MacKenzie, and Michael Stone.

REPORTING BUGS

GNU coreutils online help: <https://www.gnu.org/software/coreutils/>
Report any translation bugs to <https://translationproject.org/team/>

COPYRIGHT

Copyright © 2020 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>.
This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.

WHO